2
Installing a Rear Module
2-6
9921-FS PRODUCT MANUAL
9921-FS-OM (V1.18)
Figure 2-3 9921-FS with Expansion Rear Module
Expansion Rear Module
Base Rear Module
Expansion Rear Module always mates to expansion piggyback card. Expansion Rear Module installs on slot directly to the left of
base Rear Module.
Note: Where a base -HV rear module is to be used in conjunction with an expansion rear module, a companion -HV expansion
rear module must also be used. Both base and expansion HV rear modules use card positioning that optimizes air flow across
the component surface of the card PCB.
REAR VIEW OF FRAME
Fusion3G base
card and Base
Rear Module
Fusion3G expansion
card and Expansion
Rear Module
